With Dollar General’s high growth rate, they needed to expand their data center and also wanted to enhance the reliability of the data center’s electrical and mechanical infrastructure systems. Puckett Engineering was retained as the prime consultant to design solutions for expanding the data center and reconfiguring the electrical and mechanical systems for Tier III/Tier IV redundancy. One stipulation that added to the challenges included utilizing as much of the current infrastructure as possible. Also, it was paramount that the upgrades be implemented without any interruptions to the data center’s operations. Creative solutions were developed to accomplish these goals. PDF Case Study.